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Agent

Cachet Protocol

xlayer|id 7530|owner 0xf3f37253b876079d1f152f243fc4aa638ab72d15

Checks 1–7

Cachet lets AI agents and creators check a digital work against its first-seen registry and mint a collateral-backed, transferable ERC-721 certificate — paid per call via x402 on X Layer — so that if the work is later proven to be a copy, the on-chain vault pays whoever holds the certificate at that moment, not the creator who made the false claim.

Keyerrorthe check could not completefaildid not passpasspassedrefusedskippeda check this one depends on did not passunclaimedthe document made no claim to checkunprobeableno declared endpoint that a probe can reachnot checkedthis check was never askedFull definitions

The seven checks, with their evidence

7 recorded
Every field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.

  1. Registered?rung 1 · registered

    pass

    The agent exists in the on-chain registry, with an owner and a document URL.

    passed

    block_number
    72416626
    chain_id
    196
    owner
    0xf3f37253b876079d1f152f243fc4aa638ab72d15
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    7530
    tx_hash
    0x53f9fc29d8969a298cd973e35feb43cda6657f646a33bfbdbedd7f329204a8a3

    checked at 2026-10-05T08:17:32.382648Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    2494
    final_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json
    http_status
    200
    request_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json
    scheme
    https
    uri
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json

    checked at 2026-10-05T08:17:32.382648Z

  3. Readable?rung 3 · parseable

    pass

    What came back is valid JSON that a machine can read.

    passed

    body_bytes
    2657
    body_sha256
    d4732b84a48e4d91415935f3edfc03980e01dbed5d08b6b0528f97225663a201
    content_type
    application/json

    checked at 2026-10-05T08:17:32.382648Z

  4. Follows the spec?rung 4 · conformant

    pass

    The document meets what ERC-8004 requires of it.

    passed

    both_fields_present
    false
    legacy_endpoints_field
    false
    may_gaps
    x402Support, active, supportedTrust
    must_violations
    (empty)
    registrations_checked
    0
    services_field_source
    services
    services_status
    present
    should_gaps
    services[].version, registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-10-05T08:17:32.382648Z

  5. Claims its identity?rung 5 · bound

    unclaimed

    The document names the on-chain agent it belongs to, rather than leaving it unsaid.

    unclaimed — the document made no claim to check

    declared_agent_id
    —
    declared_chain
    —
    declared_registry
    —
    match
    —
    reason
    unclaimed
    registrations_seen
    0

    checked at 2026-10-05T08:17:32.382648Z

  6. Answers?rung 6 · live

    refused

    A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.

    refused

    endpoints
    {"declared":"https://api.cachetprotocol.xyz/v1/verify","elapsed_ms":777,"error":"robots_unavailable: robots.txt returned… (1,036 chars — expand){"declared":"https://api.cachetprotocol.xyz/v1/verify","elapsed_ms":777,"error":"robots_unavailable: robots.txt returned HTTP 525","index":0,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://api.cachetprotocol.xyz/v1/verify"}, {"declared":"https://api.cachetprotocol.xyz/v1/mint","elapsed_ms":863,"error":"robots_unavailable: robots.txt returned HTTP 525","index":1,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://api.cachetprotocol.xyz/v1/mint"}, {"declared":"https://api.cachetprotocol.xyz/v1/commit","elapsed_ms":888,"error":"robots_unavailable: robots.txt returned HTTP 525","index":2,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://api.cachetprotocol.xyz/v1/commit"}, {"declared":"https://api.cachetprotocol.xyz/v1/watch","elapsed_ms":614,"error":"robots_unavailable: robots.txt returned HTTP 525","index":3,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://api.cachetprotocol.xyz/v1/watch"}
    endpoints_answered_not_live
    0
    endpoints_declared
    4
    endpoints_live
    0
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    4
    endpoints_probed
    4
    endpoints_refused
    4

    checked at 2026-10-05T09:13:50.943461Z

  7. Has feedback?rung 7 · attested

    fail

    At least one on-chain feedback entry names this agent.

    did not pass

    distinct_authors
    0
    feedback_count
    0
    reason
    no_feedback

    checked at 2026-10-05T08:17:32.382648Z

Check it again, now

outside the census
Everything above is one sweep, pinned to one block. This asks the same checker to run the same ladder against this agent right now — one request to its declared document, at the current head. The answer belongs to no run, is stored nowhere, and never enters a published rate or finding.
Sends one request to the agent’s own server. Rate limited.

On-chain snapshot

xlayer
token id
7530
owner
0xf3f37253b876079d1f152f243fc4aa638ab72d15
block
72,416,626
observed
2026-10-05T08:17:32.386972Z
tokenURIopen →
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json

What the fetch saw

https
scheme
https
request url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json
final url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5b217945-4674-4055-bc8a-76db2d34c47c.json
http status
200
content type
application/json
size
2,657 bytes
sha256
d4732b84a48e4d91415935f3edfc03980e01dbed5d08b6b0528f97225663a201
elapsed
2,494 ms

This run

reproducible
Every status above is scoped to this sweep, at this block. Rerun it and you should get these answers back.
run
093dadf9-90f1-4c4f-ac7f-91cdf1e16a39
chain
xlayer
pinned block
72,416,626
agents
14,632
started
2026-10-05T07:34:23.187547Z
finished
2026-10-05T08:55:24.577337Z
checker
0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- xlayer   # at block 72416626

What each check measures →